Search a number
-
+
7042525431 = 38872646571
BaseRepresentation
bin1101000111100010…
…00110100011110111
3200011210202100201020
412203301012203313
5103410341303211
63122453432223
7336343323054
oct64361064367
920153670636
107042525431
112a9435a657
12144663b673
13883075116
144ab46a02b
152b3419306
hex1a3c468f7

7042525431 has 8 divisors (see below), whose sum is σ = 9400623744. Its totient is φ = 4689722040.

The previous prime is 7042525421. The next prime is 7042525447. The reversal of 7042525431 is 1345252407.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7042525431 - 26 = 7042525367 is a prime.

It is a super-2 number, since 2×70425254312 = 99194328892563471522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7042525392 and 7042525401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042525421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320625 + ... + 1325946.

It is an arithmetic number, because the mean of its divisors is an integer number (1175077968).

Almost surely, 27042525431 is an apocalyptic number.

7042525431 is a deficient number, since it is larger than the sum of its proper divisors (2358098313).

7042525431 is a wasteful number, since it uses less digits than its factorization.

7042525431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647461.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 7042525431 is about 83919.7559040778. The cubic root of 7042525431 is about 1916.7970896740.

Adding to 7042525431 its reverse (1345252407), we get a palindrome (8387777838).

The spelling of 7042525431 in words is "seven billion, forty-two million, five hundred twenty-five thousand, four hundred thirty-one".

Divisors: 1 3 887 2661 2646571 7939713 2347508477 7042525431